Results 111 to 120 of about 70,853 (271)

Review of the Structural Stability, Electronic and Magnetic Properties of Nonmetal-Doped TiO$_2$ from First-Principles Calculations

open access: yes, 2012
This paper reviews and summarizes the recent first-principles theoretical studies of the structural stability, electronic structure, optical and magnetic properties of nonmetal-doped TiO$_2$.
Dai, Ying, Huang, Baibiao, Yang, Kesong
core   +1 more source

Preparation and Structural Characterizations of Titania Slag

open access: yesHigh Temperature Materials and Processes, 2012
The thermal stability, crystal structures, microstructure, surface chemical functional groups and molecular structures of titania slag were characterized using TG/DSC, XRD, SEM, FT-IR and Raman spectroscopy techniques, respectively.
Chen Guo   +3 more
doaj   +1 more source

Ferromagnetism at 300 K in spin-coated films of Co doped anatase and rutile TiO2

open access: yes, 2004
Thin films of Ti1-xCoxO2 (x=0 and 0.03) have been prepared on sapphire substrates by spin-on technique starting from metalorganic precursors. When heat treated in air at 550 and 700 C respectively, these films present pure anatase and rutile structures ...
Chambers   +24 more
core   +1 more source

Phase transitions and guest positions state in the nanodisperse TiO2 caused by laser irradiation

open access: yesФізика і хімія твердого тіла
The laser irradiation effect on the guest positions state in TiO2 (anatase) that facilitates lithium ions access to these positions was studied. The method of chemical potential spectroscopy revealed sharp voltage drops and the associated minima in the ...
I.M. Budzuliak   +7 more
doaj   +1 more source

Theoretical study on copper's energetics and magnetism in TiO2 polymorphs

open access: yes, 2013
We carried out density functional theory calculations to model the electronic structure and the magnetic interactions in copper doped anatase and rutile titanium dioxide in order to shed light on the potential of these systems as magnetic oxides using ...
Assadi, M. Hussein. N.   +1 more
core   +1 more source

Ruthenium‐Titania Interface‐Mediated Water Activation for High Turnover Frequency in Alkaline Hydrogen Evolution

open access: yesCarbon Energy, EarlyView.
Heterostructured interfaces can accelerate hydrogen evolution by improving water dissociation, yet their underlying mechanisms remain unclear. This study combines in situ Raman spectroscopy and density functional theory to reveal how the RuO2/TiO2 interface promotes both water dissociation and hydrogen adsorption, providing new insights into the ...
Dwi Sakti Aldianto Pratama   +3 more
wiley   +1 more source

A Deeper Insight on the Stability of Water-Induced Reconstruction of Anatase (001) Surface

open access: yesApplied Sciences, 2018
TiO 2 anatase (001) surface has been indicated for many years as a potential system for water dissociation and hydrogen production. Surface reconstruction periodicity of TiO 2 anatase (001) in water is revised on the basis of the new ...
Giuseppe Zollo, Eugenio Vitale
doaj   +1 more source

Combinatorial doping of TiO_2 with platinum (Pt), chromium (Cr), vanadium (V), and nickel (Ni) to achieve enhanced photocatalytic activity with visible light irradiation [PDF]

open access: yes, 2010
Titanium dioxide (TiO_2) was doped with the combination of several metal ions including platinum (Pt), chromium (Cr), vanadium (V), and nickel (Ni). The doped TiO_2 materials were synthesized by standard sol-gel methods with doping levels of 0.1 to 0.5 ...
Choi, Jina   +2 more
core  

Ab-initio calculations of the Optical band-gap of TiO2 thin films

open access: yes, 2004
Titanium dioxide has been extensively studied in recent decades for its important photocatalytic application in environmental purification. The search for a method to narrow the optical band-gap of TiO2 plays a key role for enhancing its photocatalytic ...
ASUKA TERAI   +11 more
core   +1 more source

Structure‐Function Tailoring of Plasmonic Nanomaterials for Thin‐Film Photovoltaics

open access: yesCarbon Energy, EarlyView.
This review discusses the mechanisms and recent advancements of plasmonics in achieving effective light management to enhance the performance of thin‐film solar cells. It highlights applications in high‐performance perovskite solar cells and future‐oriented tandem solar cells.
Sen Jiang   +14 more
wiley   +1 more source

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